The Synthesis and Properties of a Novel Solid Polyphosphazene Electrolyte for Lithium Ion BatteryReport as inadecuate




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Polydichlorophosphazene was synthesized from hexachlorocyclotriphosphazene by hightemperature decyclopolymerization, and poly 2-2-methoxyethoxyethanol phosphazeneMEEP was synthesized by alcohol-Na+ reaction. The optimal synthesis parameters were obtained and the structure of MEEP was analyzed by FTIR, 31P -NMR, 13C-NMR and 1H-NMR. The results show that the product synthesized in this paper is MEEP and its molecular weight is up to 3400. Then polyphosphazene electrolyte was prepared by mixing MEEP with LiCF3SO3 and its heat stability and ionic conductivity were determined. The results indicate that the electrolyte prepared in this paper has high thermo-decomposed temperature, and its room-temperature conductivity is up to 1.187×10-4 S-cm.

KEYWORDS

Polydichlorophosphazene; poly2-2-methoxyethoxyethanol phosphazene MEEP; solid polymer electrolyte for lithium ion battery

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Author: Ming-shan Yang, Jian-wei Liu, Jin Yu, Xu Zhang, Jing Wei, Lin-kai Li

Source: http://www.scirp.org/



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